Concrete railroad-tie.



M. W. GRINDLE.

CONCRETE RAILROAD TIE.

APPucATlon man ocT.1s.|91a.

Patented 00h13, 1916.

TED sTATEs `PATENT MONROE WOODARD GRINDLE, OF SANTA ROSA, CALIFORNIA.

CONCRETE R AILROAD-TIE.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application led October 18,'1913. Serial No. 795,936.

To all whom it may concern.'

Be it known that I, MONROE WooDARD GRINDLE, a citizen of the United States, residing at Santa Rosa. in the county of Sonoma and State of California, have invented an Improvement in Concrete Railroad-Ties, of which the following is a specification.

The object of my improvements are to provide a concrete railroad tie together with .its mechanism that will excel all other rail? road ties in strength, durability, simplicity and practical utility. These objects are atrail c, is placed on the steelbearing B, at`

right angles with the tie A, with the inner flange f, under and against the guard C. The hook on the steel rod a, is pressed over and against the outer flange4 f, of the rail c; the nut d, is then turned on the thread c, so as to draw the rail c, firmly against the guard O, thus holding the rail c, safely and firmly in position for use.

Copies of this patent may be obtained for The groove g, in the concrete, is alined ywith the iron pipe b, and serves to permit the steel rods a, to be put into or to be drawn out of the pipes b.

I am aware that prior to my invention,

concrete railroad ties have been made; but- Y I claim z- A railway tie, including a concrete or plastic member, metal bearings each having a central fiat bearing surface proper Hush with the upper surface of said plastic member, said metal bearings having downwardlyV and outwardly inclined portions embedded and inclosed in said plastic member, metal tubular Stringer-like members positioned diagonally intermediate said bearings and embedded in said plastic member, and bracing members housed. within said tubular members, with their terminals adapted to y oppositely clamp the rail-bases, said bracing members being adapted to engage and conform to the downwardly andk outwardly inclined portions of said bearings.

Dated and signed this 11th day of October, A. D. 1913.

VMONROE WOODARD GRINDLE.

Witnesses: I

ALMA SARAH ANKER, MARY LOUISE DEKOIN.

ve cents each, by addressing the Commissioner of Patents. Washington, D. C. v 

